apache2.4 - How to redirect your application to HTTP from HTTPS

Apache2.4 -
Apache is the most widely used web server software. Developed and maintained by Apache Software Foundation, Apache is an open source software available for free.

Prerequisites -

• One Linux box
• A user with Sudo access

Step 1- Install Apache2.4
To Install Apache2.4 run the following command at the Linux terminal.

$ sudo apt install apache2

Check Apache Service-

$ sudo systemctl status apache2.service

Step 2- Enable HTTPS 
Default Apache installation works only with HTTP, To enable HTTPS, follow the steps below.

$ sudo vi /etc/apache2/ports.conf

Add Listen 443 line-

Listen 80
Listen 443

<IfModule ssl_module>
        Listen 443
</IfModule>

<IfModule mod_gnutls.c>
        Listen 443
</IfModule>

Save and Exit from the file. Restart Apache service to apply changes.
Enable default-ssl.conf site using the command below.

$ sudo a2ensite default-ssl.conf

Enable SSL Module.

$ sudo a2enmod ssl

Now, restart apache service to apply changes.

$ sudo systemctl status apache2.service

Step 3- Redirect HTTPS request to HTTP.
To redirect HTTPS request to HTTP modify /etc/apache/sites-available/default-ssl.conf file. (In my case, I'm using default SSL site, you can modify your Vhost that have SSL configuration.)
Edit Virtual host configuration file-

sudo vi /etc/apache2/sites-available/default-ssl.conf

Add following line between virtual host configuration.

<If "%{HTTPS} == 'on'" >
                Redirect permanent / http://192.168.102.10/
                </If>

Your VirtualHost configuration should be like this.

 <VirtualHost _default_:443>
                ServerAdmin webmaster@localhost

                DocumentRoot /var/www/html
                 <If "%{HTTPS} == 'on'" >
                Redirect permanent / http://192.168.102.10/
                </If>

                # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
                # error, crit, alert, emerg.
                # It is also possible to configure the loglevel for particular
                # modules, e.g.
                #LogLevel info ssl:warn

                ErrorLog ${APACHE_LOG_DIR}/error.log
                CustomLog ${APACHE_LOG_DIR}/access.log combined

Save and restart Apache Service.

$ sudo systemctl status apache2.service

Step 4- Test your website-
After, change the required configuration, your website should redirect to http from https. https://192.168.102.10

!!Cheers!!